diff --git a/mistral/api/app.py b/mistral/api/app.py
index 9643bb9e3..0e02f3576 100644
--- a/mistral/api/app.py
+++ b/mistral/api/app.py
@@ -15,6 +15,7 @@
 
 from oslo_config import cfg
 import oslo_middleware.cors as cors_middleware
+import oslo_middleware.http_proxy_to_wsgi as http_proxy_to_wsgi_middleware
 import osprofiler.web
 import pecan
 
@@ -82,6 +83,9 @@ def setup_app(config=None):
             enabled=cfg.CONF.profiler.enabled
         )
 
+    # Create HTTPProxyToWSGI wrapper
+    app = http_proxy_to_wsgi_middleware.HTTPProxyToWSGI(app, cfg.CONF)
+
     # Create a CORS wrapper, and attach mistral-specific defaults that must be
     # included in all CORS responses.
     return cors_middleware.CORS(app, cfg.CONF)
diff --git a/mistral/api/controllers/root.py b/mistral/api/controllers/root.py
index 9183b9359..355c3b1ba 100644
--- a/mistral/api/controllers/root.py
+++ b/mistral/api/controllers/root.py
@@ -67,7 +67,7 @@ class RootController(object):
     def index(self):
         LOG.debug("Fetching API versions.")
 
-        host_url_v2 = '%s/%s' % (pecan.request.host_url, 'v2')
+        host_url_v2 = '%s/%s' % (pecan.request.application_url, 'v2')
         api_v2 = APIVersion(
             id='v2.0',
             status='CURRENT',
diff --git a/mistral/api/controllers/v2/root.py b/mistral/api/controllers/v2/root.py
index 1c5b1f74d..156659f1a 100644
--- a/mistral/api/controllers/v2/root.py
+++ b/mistral/api/controllers/v2/root.py
@@ -59,4 +59,5 @@ class Controller(object):
 
     @wsme_pecan.wsexpose(RootResource)
     def index(self):
-        return RootResource(uri='%s/%s' % (pecan.request.host_url, 'v2'))
+        return RootResource(uri='%s/%s' % (pecan.request.application_url,
+                                           'v2'))
diff --git a/mistral/context.py b/mistral/context.py
index 567a8e582..bf48a6f62 100644
--- a/mistral/context.py
+++ b/mistral/context.py
@@ -31,7 +31,7 @@ from mistral import utils
 
 CONF = cfg.CONF
 _CTX_THREAD_LOCAL_NAME = "MISTRAL_APP_CTX_THREAD_LOCAL"
-ALLOWED_WITHOUT_AUTH = ['/', '/v2/']
+ALLOWED_WITHOUT_AUTH = ['/', '/v2/', '/workflowv2/', '/workflowv2/v2/']
 
 
 class MistralContext(oslo_context.RequestContext):
diff --git a/mistral/tests/unit/api/test_oslo_middleware.py b/mistral/tests/unit/api/test_oslo_middleware.py
new file mode 100644
index 000000000..ab7038dcf
--- /dev/null
+++ b/mistral/tests/unit/api/test_oslo_middleware.py
@@ -0,0 +1,42 @@
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""Tests http_proxy_to_wsgi middleware."""
+
+from mistral.tests.unit.api import base
+from oslo_config import cfg
+from oslo_middleware import http_proxy_to_wsgi as http_proxy_to_wsgi_middleware
+
+
+class TestHTTPProxyToWSGIMiddleware(base.APITest):
+    """Test oslo_middleware HTTPProxyToWSGI.
+
+    It checks that oslo_middleware middleware HTTPProxyToWSGI is executed
+    when enabled.
+    """
+
+    def setUp(self):
+        # Make sure the HTTPProxyToWSGI options are registered
+        cfg.CONF.register_opts(http_proxy_to_wsgi_middleware.OPTS,
+                               'oslo_middleware')
+
+        # Enable proxy headers parsing in HTTPProxyToWSGI middleware.
+        self.override_config(
+            "enable_proxy_headers_parsing",
+            "True",
+            group='oslo_middleware'
+        )
+
+        # Create the application.
+        super(TestHTTPProxyToWSGIMiddleware, self).setUp()
diff --git a/mistral/tests/unit/api/v2/test_root.py b/mistral/tests/unit/api/v2/test_root.py
index f09807fc2..334581393 100644
--- a/mistral/tests/unit/api/v2/test_root.py
+++ b/mistral/tests/unit/api/v2/test_root.py
@@ -15,6 +15,7 @@ from oslo_serialization import jsonutils
 
 from mistral.tests.unit.api import base
 from mistral.tests.unit.api import test_auth
+from mistral.tests.unit.api import test_oslo_middleware
 
 
 class TestRootController(base.APITest):
@@ -71,3 +72,69 @@ class TestRootControllerWithAuth(test_auth.TestKeystoneMiddleware):
             'http://localhost/v2',
             data['uri']
         )
+
+
+class TestRootControllerWithHTTPProxyToWSGI(test_oslo_middleware.
+                                            TestHTTPProxyToWSGIMiddleware):
+    def test_index(self):
+        resp = self.app.get('/', headers={'Accept': 'application/json',
+                                          'Host': 'localhost'})
+
+        self.assertEqual(200, resp.status_int)
+
+        data = jsonutils.loads(resp.body.decode())
+        data = data['versions']
+        self.assertEqual('v2.0', data[0]['id'])
+        self.assertEqual('CURRENT', data[0]['status'])
+        self.assertEqual(
+            [{'href': 'http://localhost/v2', 'rel': 'self', 'target': 'v2'}],
+            data[0]['links']
+        )
+
+    def test_v2_root(self):
+        resp = self.app.get('/v2/', headers={'Accept': 'application/json',
+                                             'Host': 'localhost'})
+
+        self.assertEqual(200, resp.status_int)
+
+        data = jsonutils.loads(resp.body.decode())
+
+        self.assertEqual(
+            'http://localhost/v2',
+            data['uri']
+        )
+
+    def test_index_with_prefix(self):
+        resp = self.app.get('/',
+                            headers={'Accept': 'application/json',
+                                     'Host': 'openstack',
+                                     'X-Forwarded-Proto': 'https',
+                                     'X-Forwarded-Prefix': '/workflowv2'})
+
+        self.assertEqual(200, resp.status_int)
+
+        data = jsonutils.loads(resp.body.decode())
+        data = data['versions']
+        self.assertEqual('v2.0', data[0]['id'])
+        self.assertEqual('CURRENT', data[0]['status'])
+        self.assertEqual(
+            [{'href': 'https://openstack/workflowv2/v2', 'rel': 'self',
+              'target': 'v2'}],
+            data[0]['links']
+        )
+
+    def test_v2_root_with_prefix(self):
+        resp = self.app.get('/v2/',
+                            headers={'Accept': 'application/json',
+                                     'Host': 'openstack',
+                                     'X-Forwarded-Proto': 'https',
+                                     'X-Forwarded-Prefix': '/workflowv2'})
+
+        self.assertEqual(200, resp.status_int)
+
+        data = jsonutils.loads(resp.body.decode())
+
+        self.assertEqual(
+            'https://openstack/workflowv2/v2',
+            data['uri']
+        )
diff --git a/mistral/utils/rest_utils.py b/mistral/utils/rest_utils.py
index e941b40aa..70a146d64 100644
--- a/mistral/utils/rest_utils.py
+++ b/mistral/utils/rest_utils.py
@@ -235,7 +235,7 @@ def get_all(list_cls, cls, get_all_function, get_function,
     return list_cls.convert_with_links(
         rest_resources,
         limit,
-        pecan.request.host_url,
+        pecan.request.application_url,
         sort_keys=','.join(sort_keys),
         sort_dirs=','.join(sort_dirs),
         fields=','.join(fields) if fields else '',
diff --git a/tools/config/config-generator.mistral.conf b/tools/config/config-generator.mistral.conf
index 677a2301a..a6c9ac28d 100644
--- a/tools/config/config-generator.mistral.conf
+++ b/tools/config/config-generator.mistral.conf
@@ -3,6 +3,7 @@ namespace = mistral.config
 namespace = oslo.db
 namespace = oslo.messaging
 namespace = oslo.middleware.cors
+namespace = oslo.middleware.http_proxy_to_wsgi
 namespace = keystonemiddleware.auth_token
 namespace = periodic.config
 namespace = oslo.log